Pneumococcal antibody responses in elite swimmers

Area of Science:

• Immunology
• Sports Medicine
• Vaccinology

Background:

• Elite athletes undergo rigorous training, potentially impacting immune function.
• Pneumococcal vaccination (Pneumovax 23) elicits an antibody response crucial for infection prevention.
• Understanding immune responses in athletes is vital for maintaining health and performance.

Purpose of the Study:

• To evaluate the antibody response to Pneumovax 23 in elite swimmers post-intensive training.
• To compare immune responses between elite swimmers and sedentary controls.
• To investigate correlations between antibody response, performance, infection rates, and psychological variables.

Main Methods:

• Assessed antibody titres to six pneumococcal serotypes in 20 elite swimmers and 19 sedentary controls.
• Measured serum immunoglobulin isotypes and IgG subclasses before and after vaccination.
• Utilized the Profile of Mood States (POMS) questionnaire for psychological assessment.

Main Results:

• No significant differences in pneumococcal antibody responses between swimmers and controls.
• Swimmers had lower prevaccination IgG2 and IgG3 levels but showed greater post-vaccination IgG1, IgG3, and IgG4 subclass responses.
• No correlations found between antibody response and performance, infection rates, or psychological variables.

Conclusions:

• Elite swimmers demonstrate an equivalent antibody response to Pneumovax 23 compared to sedentary individuals.
• Intensive training does not impair the ability to respond to pneumococcal vaccination.
• Swimmers exhibit a heightened polyclonal immunoglobulin response post-vaccination, particularly in specific IgG subclasses.